Results 11 to 20 of about 150,698 (248)
Terahertz correlation spectroscopy infers particle velocity and rheological properties
Optics Letters, 2016 Correlation spectroscopy is an analytical technique that can identify the residence time of reflective or fluorescent particles in a measurement spot, allowing particle velocity or diffusion to be inferred. We show that the technique can be applied to data measured with a time-domain terahertz sensor. The speed of reflectors such as silica ballotini or
Rees, Eric J, Su, Ke, Zeitler, Axel
openaire +3 more sources
A Raman anemometer for component-selective velocity measurements of particles in a flow [PDF]
, 1981 An anemometer for the measurement of the velocity of particles of different components in a flow, separate and apart from that of the flow itself, is described. As a component-selective mechanism Raman scattering is used.
Florisson, O. +2 more
core +2 more sources
Enhancement of Doppler spectroscopy to transverse direction by using optical vortex
Scientific Reports, 2023 Tunable diode laser absorption spectroscopy (TDLAS) is a valuable method for measuring particle flow velocities in plasma. However, conventional TDLAS using a plane-wave beam is sensitive only to the laser propagation direction.
Hiroki Minagawa +3 more
doaj +1 more source
Observation of near-field coupling in metal nanoparticle chains using far-field polarization spectroscopy [PDF]
, 2002 Far-field polarization spectroscopy on chains of Au nanoparticles reveals the existence of longitudinal (L) and transverse (T) plasmon-polariton modes.
Atwater, Harry A. +3 more
core +1 more source
Results in Chemistry, 2021 In this work, ZnO-CoO/Al2O3 nanoparticles were synthesized and used as a catalyst for the dehydrogenation of ethanol to produce acetone. The catalyst was characterized by transmission electron microscopy (TEM) and Brunauer–Emmett–Teller (BET) to identify
Malik M. Mohammed +4 more
doaj +1 more source
Interpretations of the impact of cross-field drifts on divertor flows in DIII-D with UEDGE
Nuclear Materials and Energy, 2017 Simulations using the multi-fluid code UEDGE indicates that, in low confinement (L-mode) plasmas in DIII-D, poloidal projection of the ionization driven flows dominate poloidal particle flows in the divertor near the divertor plates, whereas E ×B drift ...
A.E. Jaervinen +10 more
doaj +1 more source
Hydrocarbon Sorption in Flexible MOFs—Part II: Understanding Adsorption Kinetics
Nanomaterials, 2023 The rate of sorption of n-butane on the structurally flexible metal-organic framework [Cu2(H-Me-trz-ia)2], including its complete structural transition between a narrow-pore phase and a large-pore phase, was studied by sorption gravimetry, IR ...
Hannes Preißler-Kurzhöfer +9 more
doaj +1 more source
Synthesis and characterization of zinc doped beryllium oxide: Ethylene glycol nanofluids [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2022 The current study used ultrasound-assisted chemical precipitation to create zinc doped beryllium oxide (BeO) nanoparticles. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the synthesized samples.
P. Prakash +4 more
doaj +1 more source
Colloquium: Graphene spectroscopy [PDF]
, 2014 Spectroscopic studies of electronic phenomena in graphene are reviewed. A variety of methods and techniques are surveyed, from quasiparticle spectroscopies (tunneling, photoemission) to methods probing density and current response (infrared optics, Raman)
A. Lanzara +5 more
core +1 more source
AIP Advances, 2016 The accurate hydrodynamic description of an event or system that addresses the equations of state, phase transitions, dissociations, ionizations, and compressions, determines how materials respond to a wide range of physical environments.
Zhi-Guo Li +4 more
doaj +1 more source